Table 1 Environmental risk index for the different functional areas of the mine

1

6.67

14.87

19.34

64.61

22.98

30.21

2

10.34

20.90

49.26

44.31

3.70

20.81

3

0.43

6.86

14.54

48.09

1.92

11.04

4

6.04

7.73

9.08

32.82

5.17

18.52

5

16.42

10.75

23.56

36.86

38.00

24.18

6

12.66

5.82

35.81

21.74

-1.49

10.07

7

0.49

15.58

-2.38

39.72

18.34

15.56

8

− 0.33

12.95

− 1.24

44.65

31.61

12.18

9

0.27

7.37

− 2.16

30.54

47.68

10.17

10

1.49

16.06

3.72

33.33

15.65

12.23

11

− 0.24

14.44

8.19

64.92

17.12

5.08

12

0.94

7.48

19.61

33.17

21.75

13

7.26

7.87

22.01

65.61

53.22

14

1.12

0.93

1.36

− 2.10

13.00

15

4.37

9.98

28.11

59.47

14.36

16

3.89

12.31

72.21

71.67

5.69

17

4.01

4.65

− 0.96

53.38

12.14

18

1.32

8.82

− 1.01

73.59

13.85

19

4.91

7.70

24.46

105.69

14.43

20

11.71

11.53

49.47

62.68

9.68